OK, That site has quite a few poor coding issues. It isn't difficult to build something like that. You don't need to be using any fancy PHP stuff, A lot of people like to showcase their technical skills when actually good simple quality code is more than adequate. What you need to now start considering is the info you want to be included. Start jotting stuff down, odd paragraphs etc. You will start to have lightbulb moments where you suddenly think of something you want to include. Carry a notepad so you can jot the jist down because you will forget them again!
Try and get a plan of the site. draw boxes for each page(home/contact/info/co history/etc) with lines showing links(ignore the menu at this point, this will naturally fall into place at the end). Remember the three click rule(Nothing should ever be more than three clicks away). Start collecting the images you want to use and get some idea of which page they should go on.
I'll PM you with some more bits.
Ian